Hotbed.



No. 816,323. I PATENTED MAR. 27, 1906. J. A. HELLSTROM.

HOTBED.

APPLICATION TILED AUG. 21. 1903.

SHEETS SHEET 1 1 v L 6 6 "f ATTORNEY. v

PATED'I'TED MAR. 27, 1906.

J. A. HELLSTROM.

HOTBED.

APPLICATION FILED AUG. 21, 1903.

4 SHEETS-SHBET 2.

- IN VlfN T 0R.

No. 816,828. PATENTED MAR. 27, 1906.

J. A. HELLSTROM.

a HOTBED.

APPLIOATION FILED AUG. 21.1903.

4 SHEETS-SHEET 3.

A TTORNEW PATENTED MAR. 27, 1906.

J. A. HELLSTROM.

HOTBED.

APPLIOATION FILED AUG. 21. 1903.

4 SHEETS-SHEET 4.

IQ L d A TTOHNE Y rrrnrnn era rns PATENT armor...

JOHN A. HELLSTROM, ()F PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-THIRD TO WlLLlAld S. HAUGH, OF ALLEGHENY, PE NSYLVA- NIA, AND ONE-THIRD T JOHN T. R01 LEY, OF PITTSBURG, PENN- SYLVANIA.

worsen.

Specification of Letters Patent.

iatented March 2'7, 1906.

' To all whom it may concern.-

Be it known that 1, JOHN AqfinLLsrnon, a subject of the King of Sweden and Norway, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Hotbeds, of which improvement the followin is a specification.

11y invention relates to improvements in hotbeds for rolling-mills.

The object of my invention is to produce a bed that will take the bars or rods from the rolls and automatically transfer the same to the shears, the bars being cooled during the operation; and to accomplish this object my invention consists in the novel construction and arrangement of parts hereinafter specifically described, reference being had to the accompanying drawings, forming part hereof, in w 1ich- Figure 1 is a plan view of the hotbed; Fig. 2, a side elevation thereof; Fig. 3, an enlarged detail of the adjusting mechanism for the rack; Fig. 4, an elevation looking from the right toward Fig. 1; Fig. 5, a modified form of mechanism for o crating the rack; Fig. 6, a view like Fig. 4, s lowing the form of transfer mechanism of Figs. 5 and 8 for conveying the bars or rods-from the rolls to the I racks; Fig. 7, a plan view of the upper ortion of Fig. 6; Fig. 8, a side elevation of t 1e machine of Fig. 6; Fig. 9, aside elevation of a modified form of transfer mechanism for con veying the bars or rods to the racks, and Fig. 10 a rear elevation thereof.

Referring to said drawings, and particularly to Figs. 1, 2, 3, 4, 5, 6, and 7, A is a frame or table in the sides of the top of which rollers 1 1 are mounted and are adapted to he driven by anysuitable means.

2 2 are a series of apron-plates arranged be tween said rollers and are iinged to orpivotally supported upon the vertically-disposed rods 3 the lower ends of which, respec tively, are pivotally connected to members 1 of the cranks 5, respectively. The said cranks are mounted on the shaft or pin 6, supported in bearings 6*, and the other mem her 7 of said crank is connected to the shaft or rod 8, which is connected to the lower end of the oscillating arm 9, which is nniunted on the shaft 10. A lever 10 is mounted on said shaft 10, the lower end of which is connected to the piston 12 of the cylinders 13. A double lever 11 is mounted on said shaft 10, the ends of said double lever 11 being connected to links 14, which are connected to the double levers 15 15, which are mounted on shafts or pins 16 16, supported in bearings 16 and are adapted to be oscillated or swung thereon 'by the movement of said pistons transmitting.

through the aforesaid levers. The outer ends, respectively, of said levers 15 15 are ivotally connected to the vertically-disposed are or rods 17 17 ,'the upper ends of which, respectively, are attached to the girders 18 18, arranged at the lower and up er ends, res ectively, of the sets of toothed bars 19 an 22, and connect the bars of the res ective sets 19 and 22 together, so that the are of each set move in unison and are so arranged that each toothed bar can be adjusted by set screws 19". I

The girders 18 and 18 are longitudinally disposed at the top and bottom of said toothed rack, which comprises the bars 19,'

the upper edges of which are serrated, toothed, or grooved and the upper ends of which terminate in hooks 19, engaging the shaft 21 and the bars 22, which are similar in construction to bars 19, the lower ends of said bars 22 in hooks B engaging the shaft 20, whereby when the vertical shafts 17 and 17 are simultaneously reoiprocated vertically the saidv bars 19 and 22 are oscillated, respectively, at their upper and lower ends upon theshafts 21 and 20 as pivotal oints. In other words, the lower ends of t e bars 19 are elevated simultaneously, the upper ends of bars are lowered, and vice versa, transferring the material resting in the grooves or teeth of the bars successively from one set of bars to the other set and progressively moving the material down said toothed rack, the movement of the material being due to gravit In Figs. 1, 2, 4 the toothed rack is shown as being operated by a single oscillating lever 11, dlrectly connected to rods 17 and 17. It

is unimportant which means is employed to operate the rack.

In Figs. 9 and 10 the table A is shown as being provided with feed-rollers 1 1, which.

are mounted in the sides of the top thereof F displacing saic for 111 21th)!"- bars tank

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